TNPSC Engineering Services Previous Year Question Paper 2008 for Textile Engineering
| TNPSC – Combined – Engg. – Services – 2008 – Textile-Engg. | |
| Sr. No. | Questions with multiple options |
| 1. | The speed at which POY (PET) is produced is
(a) 100 m/min (b) 6000 m / min (c) 3000 m/min (d) 4500 m / min |
| 2. | Polystyrene cannot be made into fibre because
(a) It is amorphous (b) It is linear (c) It is semi-crystalline (d) It is crystalline |
| 3. | Glass transition temperature ( is _______ reaction.
(a) Endothermic (b) Exothermic (c) Partially exothermic (d) Partially endothermic |
| 4. | The crystallinity % of polypropylene fibre is
(a) 6% (b) 75% (c) 25% (d) 50% |
| 5. | The fibre with negative birefringence is
(a) PET (b) Nylon-6 (c) Nylon-66 (d) Acrylic |
| 6. | The precursor for carbon fibre is
(a) Nylon-6 (b) PET (c) Acrylic (d) Nylon-66 |
| 7. | The melt flow index of high molecular weight PP is
(a) 3 (b) 25 (c) 30 (d) 35 |
| 8. | ______ is used as preferred catalyst for polymerization of caprolactum.
(a) Acid (b) Base (c) Water (d) Salt solution |
| 9. | The glass transition temperature of polypropylene is
(a) – 10° C (b) – 100° C (c) – 50° C (d) 10° C |
| 10. | The fibre that can be cold drawn is
(a) Nylon (b) PET (c) Acrylic (d) Aramid |
| 11. | The relationship between molecular weight (MW) and DP (degree of polymersation) in nylon -6 polymerisation is
(a) MW = 10 x DP (b) MW = 113 x DP (c) MW = 200 x DP (d) MW = 250 x DP |
| 12. | PET dissolves in
(a) Acetic acid (b) Acrylic acid (c) O-chlorophenol (d) Acetone |
| 13. | The length of screw in extruder is higher for
(a) Nylon-6 (b) Nylon-66 (c) PET (d) PP. |
| 14. | The density of _____ fibre is highest.
(a) Polypropylene (b) Polyethylene (c) Nylon (d) Cotton |
| 15. | Which one of the following is a fault produced in friction texturising?
(a) Die swell (b) Draw resonance (c) Tight spots (d) Melt drips |
| 16. | The melting point of high performance polyethylene is
(a) 150° C (b) 200° C (c) 10° C (d) 70° C |
| 17. | The fibre that is used for ballistic production is
(a) Carbon fibre (b) Glass fibre (c) High performance polyethylene (d) PET fibre |
| 18. | Acrylic fibres are solution spun because
(a) It is eco-friendly (b) The production speed is higher (c) It is cost effective (d) Acrylic polymer cannot be melted |
| 19. | Retting is the extraction process applied for the production of ____ fibre.
(a) Wool (b) Silk (c) Viscose (d) Jute |
| 20. | The temperature range adopted in the shredding process of viscose manufacture is
(a) 60° C – 70° C (b) 90° C – 100° C (c) 50° C – 55° C (d) 18° C – 20° C |
| Published on 9th Oct 2021 | |
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